At the reveal, I was able to sit in the Richmond, VA. pace car (2SS), crank it up and rev it. I was disappointed. Could hardly hear it until I revved it up to around 4000 rpms. I'm sure GM was restricted to how loud they could let it go but those mufflers are coming off a day or 2 after I pick mine up. I figure the exhaust piping is already engineered for performance so I'm just doing an axle back upgrade (aftermarket mufflers) more for the roaring sound.